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प्रश्न
Draw a frequency polygon for the following:
| Daily Wages | 71 - 80 | 81 - 90 | 91 - 100 | 101 - 110 | 111 - 120 |
| Number of workers | 5 | 8 | 13 | 5 | 9 |
आलेख
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उत्तर
Mid Value (Class Mark) = `"Upper limit + lower limit"/2`
| Daily Wages | Mid-value | Number of workers |
| 71 - 80 | 75.5 | 5 |
| 81 - 90 | 85.5 | 8 |
| 91 - 100 | 95.5 | 13 |
| 101 - 110 | 105.5 | 5 |
| 111 - 120 | 115.5 | 9 |
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